MgO-SBA-15 Supported Pd-Pb Catalysts for Oxidative Esterification of Methacrolein with Methanol to Methyl Methacrylate

Li Jiang; Yanyan Diao; Junxing Han; Ruiyi Yan; Xiangping Zhang; Suojiang Zhang

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MgO-SBA-15 Supported Pd-Pb Catalysts for Oxidative Esterification of Methacrolein with Methanol to Methyl Methacrylate

催化、动力学与反应工程 | Updated：2026-01-06

- MgO-SBA-15 Supported Pd-Pb Catalysts for Oxidative Esterification of Methacrolein with Methanol to Methyl Methacrylate
- Chinese Journal of Chemical Engineering Vol. 22, Issue 10, Pages: 1098-1104(2014)
- Affiliations：
  
  1. Key Laboratory of Green Process and Engineering, Beijing Key Laboratory of Ionic Liquids Clean Process, Institute of Process Engineering, Chinese Academy of Sciences,Beijing,China,100190
  2. University of Chinese Academy of Sciences,Beijing,China,100049
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：2014
- Accepted：
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Li Jiang, Yanyan Diao, Junxing Han, Ruiyi Yan, Xiangping Zhang, Suojiang Zhang. MgO-SBA-15 Supported Pd-Pb Catalysts for Oxidative Esterification of Methacrolein with Methanol to Methyl Methacrylate[J]. , 2014, 22(10): 1098-1104.
DOI：

Li Jiang, Yanyan Diao, Junxing Han, Ruiyi Yan, Xiangping Zhang, Suojiang Zhang. MgO-SBA-15 Supported Pd-Pb Catalysts for Oxidative Esterification of Methacrolein with Methanol to Methyl Methacrylate[J]. , 2014, 22(10): 1098-1104. DOI：

摘要

Abstract

Novel MgO-SBA-15 supported catalysts were prepared for oxidative esterification of methacrolein (MAL) with methanol to methyl methacrylate (MMA). The MgO-SBA-15 supports were synthesized with different magnesia loadings fromdifferentmagnesiumprecursors and hydrochloric acidmolar concentrations. The MgO-SBA-15 supports and Pd-Pb/MgO-SBA-15 catalysts were characterized by several analysismethods. The results revealed that the addition ofMgO improved the ordered structure of SBA-15 supports and provided surface alkalinity of SBA-15 supports. The average size of the Pd

Pb particles onmagnesia-modified Pd-Pb/MgO-SBA-15 catalystswas smaller than that on the pure silica-based Pd-Pb/SBA-15 catalysts. The experiments on catalyst performance showed that the magnesia-modified Pd-Pb/MgO-SBA-15 catalysts had higher activity than pure silica-based Pd-Pb/SBA-15 catalysts

showing the strong dependence of catalytic activity on the average size of active particles. The difference of activity between Pd-Pb/SBA-15 catalysts and Pd-Pb/MgO-SBA-15 catalystswas due to the discrepant structural properties and surface alkalinity provided by MgO

which led to the different Pd

Pb particle sizes and then resulted in the d

ifferent number of active sites. Besides magnesia loadings

other factors

such as hydrochloric acid molar concentration and magnesium precursors

had considerable influences on the catalytic activity.

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